import axios from 'axios'
import md5 from 'js-md5'
import { MessageBox, Message } from 'element-ui'
import store from '@/store'
import { getToken } from '@/utils/auth'

// create an axios instance
const service = axios.create({
    baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
    withCredentials: true, // send cookies when cross-domain requests
    timeout: 10000, // request timeout
})

// request interceptor
service.interceptors.request.use(
    config => {
        let ts = Date.now();
        let csrfToken = md5(`${ts}-${navigator.userAgent}-${ts.toString(36)}`)
        let userName = window.localStorage.getItem('USER_NAME')
            // do something before request is sent
        config.headers['ts'] = ts
        config.headers['csrfToken'] = csrfToken
        config.headers['X-User'] = store.state.user.name || userName
        if (store.getters.token) {
            // let each request carry token
            // ['X-Token'] is a custom headers key
            // please modify it according to the actual situation
            config.headers['X-Token'] = getToken()
        };
        if (config.method.toLowerCase() == 'post') {
            if (config.data) {
                for (const key in config.data) {
                    if (config.data[key] === null || config.data[key] === undefined) {
                        delete config.data[key]
                    }
                }
            }
        }
        return config
    },
    error => {
        // do something with request error
        console.log(error) // for debug
        return Promise.reject(error)
    }
)

// response interceptor
service.interceptors.response.use(
    /**
     * If you want to get http information such as headers or status
     * Please return  response => response
     */

    /**
     * Determine the request status by custom code
     * Here is just an example
     * You can also judge the status by HTTP Status Code
     */
    response => {
        const res = response.data;
        // if the custom code is not 20000, it is judged as an error.
        if (res.code !== 200) {
            if (res.code === 401) {
                Message({
                    message: 'كىرگەندىن كېيىن مەشغۇلات قىلىڭ',
                    type: 'error',
                    duration: 5 * 1000
                })
                store.dispatch('user/resetToken').then(() => {
                    location.reload()
                })
            } else if (res.code == 100) {
                Message({
                    message: 'پارول خاتا',
                    type: 'error',

                })
            } else {
                Message({
                    message: res.message || 'Error',
                    type: 'error',
                    duration: 5 * 1000
                })

                // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
                if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
                    // to re-login
                    MessageBox.confirm('You have been logged out, you can cancel to stay on this page, or log in again', 'Confirm logout', {
                        confirmButtonText: 'Re-Login',
                        cancelButtonText: 'Cancel',
                        type: 'warning'
                    }).then(() => {
                        store.dispatch('user/resetToken').then(() => {
                            location.reload()
                        })
                    })
                }
            }
            return Promise.reject(new Error(res.message || 'Error'))
        } else {
            return res.data
        }
    },
    error => {
        console.log('err:  ' + error) // for debug
        Message({
            message: error.message,
            type: 'error',
            duration: 5 * 1000
        })
        return Promise.reject(error)
    }
)

export default service